Player capacities will never get smaller, and sooner or later you'll want to re-rip something in higher quality once you get a bigger, better player.
Also, you can't burn a compatible CD for yourself or anyone else very easily with MP3s or whatever silly format crApple uses.
Keep 'em. I've ripped almost 700 of my (factory-original) CDs to my Creative Touch player so far, and I'm boxing them for future use.
Hank, I'll give you a pass on the ad hominem attacks on Apple and iPod users, but I have to correct you on this one. I have burned CDs consisting of songs downloaded from iTunes and converted to AIFF - the standard CD music format. It's built into the software.
You're a bitter little man, aren't you?
For many iPod users that's a step backwards, since they're already using the superior AAC (MPEG 4 audio). But if you got a 60GB, just encode into Apple Lossless and you'll never have to worry about quality again.